标题: | 一个针对有不正常节点的无基础行动网路的以信赖为基础DSR演算法 A Trust-Based DSR Algorithm for Mobile Ad Hoc Networks with Misbehaving Nodes |
作者: | 周士宏 Shi-Hong Chou 罗济群 Chi-Chun Lo 资讯管理研究所 |
关键字: | 无基础行动网路;不正常节点;支付系统;评价系统;安全路由协定;信赖机制;mobile ad hoc networks;misbehaving nodes;payment system;reputation system;secure routing protocol;trust mechanism |
公开日期: | 2006 |
摘要: | 无基础行动网路(mobile ad hoc networks)由许多行动节点组成。行动节点必须相互合作将封包传送到目的端。由于节点可随意移动到任何地方,所以网路拓朴时常改变。这使得传统路由方式不能适用于无基础行动网路。因此,许多新的路由方式纷纷提出来。但这些路由并没有针对节点的不正常行为来处理,如恶意丢弃封包或是修改封包。所以许多相关解决方法纷纷提出。在这些方法中,主要分为支付系统(payment system)、评价系统(reputation system)和安全路由协定(secure routing protocol)。 而在全域评价系统中,只处理节点恶意地丢弃封包和修改封包。没有针对评价资讯攻击和假通报攻击进行侦测和防止。而过去的方法,很难侦测自私节点的行为。对于评价资讯的散播采用定期广播方式,会造成网路拥塞。因此有鉴于此,本研究提出一个信赖机制(trust mechanism)应用到动态来源路由(DSR;Dynamic Source Routing)中。经由实验模拟方式证明可以解决上述的问题。 Mobile ad hoc networks can be regard as wireless network self-built by mobile modes. Whenever sending data packets to the destination, mobile nodes must use the way of multi-hop relaying. Because mobile nodes can move to any location, network topology is dynamic. As a result of the dynamic topology, traditional routing algorithm can’t be applied into mobile ad hoc networks so many new routing algorithm protocols are approved. However these routing algorithm protocols can’t be used to solve the problem of misbehaving nodes, such as dropping maliciously data packets or modifying data packets. For solving these problems, more and more methods are approved. In theses methods, it mainly includes payment system, reputation system and secure routing protocol. In global reputation system, it can only solve the attack of dropping packets and modifying packets. But it can't detect and avoid the problems of reputation information attack and false notify attack. In prepared methods, it’s hard to detect selfish nodes. About reputation information dissemination, it is used to broadcast periodically in many references, but the network is congested with broadcasting packets. With a view to this situation, we will propose a new trust mechanism based on Dynamic Source Routing. After simulating, my proposal can solve above problems. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009434503 http://hdl.handle.net/11536/81677 |
显示于类别: | Thesis |